EP 1239464 A3 20040128 - Enhancement of the periodicity of the CELP excitation for speech coding and decoding
Title (en)
Enhancement of the periodicity of the CELP excitation for speech coding and decoding
Title (de)
Verbesserung der Periodizität der CELP-Anregung für die Sprachkodierung und -dekodierung
Title (fr)
Augmentation de la périodicité de l'excitation CELP lors du codage et décodage de la parole
Publication
Application
Priority
JP 2001067631 A 20010309
Abstract (en)
[origin: EP1239464A2] The present invention comprises: first periodicity providing means (54) for emphasizing periodicity of a fixed code vector output from at least one fixed excitation code book by use of a first periodicity emphasis coefficient adaptively determined based on a predetermined rule; and second periodicity providing means (58) for emphasizing periodicity of a fixed code vector output from at least one fixed excitation code book by use of a predetermined second periodicity emphasis coefficient. <IMAGE>
IPC 1-7
IPC 8 full level
G10L 19/038 (2013.01); G10L 19/04 (2013.01); G10L 19/12 (2013.01); G10L 19/125 (2013.01); G10L 19/16 (2013.01); H03M 7/30 (2006.01)
CPC (source: EP US)
G10L 19/12 (2013.01 - EP US); G10L 2019/0007 (2013.01 - EP)
Citation (search report)
- [A] EP 0714089 A2 19960529 - OKI ELECTRIC IND CO LTD [JP]
- [A] EP 1052620 A1 20001115 - MITSUBISHI ELECTRIC CORP [JP]
- [A] EP 1024477 A1 20000802 - MATSUSHITA ELECTRIC IND CO LTD [JP]
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1239464 A2 20020911; EP 1239464 A3 20040128; EP 1239464 B1 20041103; CN 1172294 C 20041020; CN 1375818 A 20021023; DE 60201766 D1 20041209; DE 60201766 T2 20051201; IL 148413 A0 20020912; JP 2002268690 A 20020920; JP 3566220 B2 20040915; TW 550541 B 20030901; US 2002128829 A1 20020912; US 7006966 B2 20060228
DOCDB simple family (application)
EP 02004644 A 20020228; CN 02106980 A 20020308; DE 60201766 T 20020228; IL 14841302 A 20020227; JP 2001067631 A 20010309; TW 91103258 A 20020225; US 8355602 A 20020227